Function executeBuild

packages/cli/src/util/dev/builder.ts:219–530

(
  vercelConfig: VercelConfig,
  devServer: DevServer,
  files: BuilderInputs,
  match: BuildMatch,
  requestPath: string | null,
  isInitialBuild: boolean,
  filesChanged?: string[],
  filesRemoved?: string[]
)

}

export async function executeBuild(
  vercelConfig: VercelConfig,
  devServer: DevServer,
  files: BuilderInputs,
  match: BuildMatch,
  requestPath: string | null,
  isInitialBuild: boolean,
  filesChanged?: string[],
  filesRemoved?: string[]
): Promise<void> {
  const {
    builderWithPkg: { path: requirePath, builder, pkg },
  } = match;
  const { entrypoint, use } = match;
  const isStatic = isStaticRuntime(use);
  const { envConfigs, cwd: workPath, devCacheDir } = devServer;
  const debug = output.isDebugEnabled();

  const startTime = Date.now();
  const showBuildTimestamp = !isStatic && (!isInitialBuild || debug);

  if (showBuildTimestamp) {
    output.log(`Building ${use}:${entrypoint}`);
    output.debug(
      `Using \`${pkg.name}${pkg.version ? `@${pkg.version}` : ''}\``
    );
  }

  const config = match.config || {};

  let result: BuildResult;

  let { buildProcess } = match;
  if (!isStatic && !buildProcess) {
    buildProcess = await createBuildProcess(match, envConfigs, workPath);
  }

  const serviceRoutePrefix = config.routePrefix;
  const serviceWorkspace = config.workspace;
  const buildOptions: BuildOptions = {
    files,
    entrypoint,
    workPath,
    repoRootPath: workPath,
    config,
    meta: {
      isDev: true,
      requestPath,
      devCacheDir,
      filesChanged,
      filesRemoved,
      // This env distiniction is only necessary to maintain
      // backwards compatibility with the `@vercel/next` builder.
      env: { ...envConfigs.runEnv },
      buildEnv: { ...envConfigs.buildEnv },
    },
    ...(typeof serviceRoutePrefix === 'string' ||
    typeof serviceWorkspace === 'string'